Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx> writes: > Le Thu, 05 Jul 2012 12:11:40 +0200, > Arnaud Patard (Rtp) <arnaud.patard@xxxxxxxxxxx> a écrit : > >> > You are not the only one working in this area. Arnaud Patard said he >> > was look at this as well. >> >> yeah, but tbh I've not made anything yet. If Thomas has already some >> code for it, we should try to make it "generic" so as to use it on >> armada xp and orion platforms. > > The MPP registers are identical on Armada XP/370 and 88F6281 (not sure > which other SoC datasheet I should be checking). Basically, it's just a > range of contiguous registers, with 4 bits per pin to select the > function. iirc, other SoCs are similar. The small exception being dove I guess. Dove has a 3rd gpo [the gpios are output only] bank but to be used as gpio require that a special bit is set and it's for all gpios of this bank. You'll find this bit in the "general mpp configuration register" if you look at the datasheet. > > So my pinmux driver should simply work as is for Orion as well. The > only difference between platforms is the number of MPP pins that are > available, but this number also varies between versions of Armada XP > and Armada 370, so I already support this in the driver. > Are there some output-only gpio on armada xp/370 like on kirkwood/dove ? Arnaud -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
